yes, make 50 the average and 10 the standard deviation because 50 sounds like average between 0 and 100 and 10 is a round number.
On a bell curve, 68% fall between 40 and 60, so that's thats where most of the players fall.
95% fall between 50 and 70, so 70 is really good
99% fall between 20 and 80, so 80 suggests a very rare player and this is why there are so few 80s.
A couple of problems with this are:
(1) the scouting scale is not a measurement. It is a categorical variable where players are placed into buckets rather than a assigned a number like 47 or 47.3. The most precise numbers are usually in steps of 80, 75, 70, 65, 60., etc.
(2) The distribution of talent is not normal. It is skewed with more individuals clustered around lower numbers and fewer at the high end.